﻿A revision of some species of Souvanna Breuning, 1963, Mispila Pascoe, 1864, and Athylia Pascoe, 1864 (Coleoptera, Cerambycidae, Lamiinae)

﻿Abstract Alidussignatus Pic, 1926 is transferred from Mispila to Souvanna, and Souvannasignata (Pic, 1926), comb. nov. is proposed. The lectotype of Alidussignatus is designated. The following synonyms are proposed: Souvannasignata = Athylia (s. str.) quadristigma (Gressitt, 1940), syn. nov. = Souvannaphoumai Breuning, 1963, syn. nov. = Mispila (Dryusa) coomani Breuning, 1968, syn. nov., Mispila (s. str.) tenuevittata (Pic, 1930) = Mispila (s. str.) assamensis Breuning, 1938, syn. nov. The gender of the holotype of Alidusmultilineatus Pic, 1925 is determined. New distributional records for Souvannasignata, Mispilacurvilinea Pascoe, 1869, M.subtonkinea Breuning, 1968 and M.tenuevittata are provided.

Athylia and Souvanna belong to the tribe Apomecynini, while Mispila belongs to the tribe Pteropliini.According to the key to tribes of Lamiinae and the key to genera of Apomecynini (Rondon and Breuning 1970), the difference between Apomecynini and Pteropliini is that the middle tibiae have an outer groove in front of the apex in Apomecynini and the middle tibiae have no outer groove in front of the apex in Pteropliini.The difference between Athylia and Souvanna is that the eyes are deeply emarginated in Souvanna and subdivided in Athylia.Furthermore, according to Breuning (1964b) and our examined materials, the 3 rd antennal joint is longer than the 4 th in Athylia, while the 3 rd antennal joint is shorter than the 4 th in Souvanna.To confirm these differences, we also have examined material of Athylia avara Pascoe, 1864 from the Ternate Island (Indonesia), the type species of Athylia.
After our examination of these materials, we can confirm that this species belongs to the tribe Apomecynini, and, according to the mentioned features, it belongs to the monotypical genus Souvanna.
In the description of Alidus signatus, Pic (1926) mentioned "Long.7-9 mill", which indicates that Pic examined at least two specimens; thus, we designate syntype examined by us (Fig. 1A, B) as the lectotype following the recommendations of ICZN (1999;Art. 74.7).
Distribution.China (Hainan, Yunnan), Laos (Vientiane), Thailand (Trat), Vietnam (Hoa-Binh, Thái Nguyên, Thừa Thiên Huế).Body length.15.0-18.0mm (♂), 12.0-18.2mm (♀).The body length was determined from the holotypes of Mispila curvilinea, Alidus multilineatus, and additional materials examined.The body length of the holotype of A. multilineatus was mentioned in the original paper (Pic 1925).Type material examined.Mispila curvilinea: holotype, ♂ (BMNH), Mispila curvilinea (handwritten with black ink on a rectangular white label with a straightline black border) / Mispila curvilinea typ Pasc (handwritten with black ink on a rectangular white label) / India (handwritten with black ink on a fan-shaped green label) / Pascoe Coll.93-60 (printed with black ink on a square white label) / Type (printed with black ink on a circular white label with circular red borders) / NHMUK 014596491 plus a QR-code (printed with black ink on a rectangular white label); examined from five photographs (Fig. 3A-E).Alidus multilineatus: holotype, ♂ (MNHN), Pho-vi (Tonkin) 9. 07 (handwritten with black ink on a rectangular white label) / Type (handwritten with black ink on a rectangular yellow label) / ex Buquet (handwritten with black ink on a rectangular white label) / Alidus multilineatus Pic (handwritten with black ink on a rectangular white label) / TYPE (printed with black ink on a rectangular red label); examined from three photographs (Fig. 3F-H Comments.In the original description of A. multilineatus, Pic (1925) did not mention the gender of the holotype.Breuning (1963b: 475) treated it as a junior synonym of M. curvilinea and provided a supplementary description of this species, including the sexual differences: "antennae are more than 0.5 time longer than body in males, antennae are slightly shorter than body in females."According to above characters and the material examined, we could confirm that the holotype of A. multilineatus is a male.Distribution.Bengal (Klimpong, Samsingh), Cambodia, China (Guangxi, Yunnan), India (Sikkim), Laos (Bokeo, Hua Phan, Khammouane, Vientiane), Malaysia (Pahang), Vietnam (Ha Giang).Mispila (s.str.) subtonkinea Breuning, 1968 Fig. 5 Mispila (s.s.) subtonkinea Breuning, 1968b: 21 (type locality "Vientiane, Laos").Mispila (s.str.) subtonkinea Rondon and Breuning 1970: 415 (catalogue)  Mispila (s.str.) tenuevittata (Pic, 1930) Fig. 6 Sodus tenuevittatus Pic, 1930: 19 (type  ("Mispila assamensis mihi Typ" handwritten and "det.Breuning" printed with black ink on a rectangular white label) / Assam Patkai Mt. (handwritten with black ink on a rectangular white label) / Doherty (handwritten with black ink on a rectangular white label)/ Fry Coll.1905.100.(printed with black ink on a rectangular white label) / 61563 (handwritten with black ink on a rectangular white label) / Type (printed with black ink on a circular white label with circular red borders) / NHMUK 014596495 plus a QR-code (printed with black ink on a rectangular white label); examined from five photographs (Fig. 6D-H Comments.After having compared the holotypes of Mispila tenuevittata (Fig. 6A, B) and M. assamensis (Fig. 6D-G), we found that both holotypes are identical, except for the different genders.Thus, we treat M. assamensis as a junior synonym of M. tenuevittata.Yan et al. (2023) marked the holotype of M. tenuevittata as a female in the legend, while they considered it as a male in the comments.

Figure 1 .
Figure 1.A-C Alidus signatus, lectotype A dorsal habitus B lateral habitus C labels D-K Enispia quadristigma D-G holotype D male dorsal habitus E male lateral habitus F male ventral habitus G labels H-K paratype H male dorsal habitus I male lateral habitus J male ventral habitus K labels L Souvanna phoumai, syntype, dorsal habitus M-O Mispila coomani, holotype M dorsal view N lateral view O labels.Scale bars: 1 mm (D-F, H-J).

Figure 3 .
Figure 3. A-E Mispila curvilinea, holotype (photographs of Fig. 3A-C, E reproduced from Xie et al. 2023) A male dorsal habitus B male lateral habitus C male ventral habitus D male frontal view E labels F-H Alidus multilineatus, holotype F male dorsal habitus G male lateral habitus H labels.

Figure 4 .
Figure 4. Mispila curvilinea, dorsal habitus A male from Yunnan, China B female from Yunnan, China C male from Hua Phan, Laos D female from Hua Phan, Laos E female from Pahang, Malaysia.

Figure 6 .
Figure 6.Mispila tenuevittata A-C Sodus tenuevittatus, holotype A male dorsal habitus B male lateral habitus C labels (photographs of Fig. 6A-C reproduced from Yan et al. 2023) D-H Mispila assamensis, holotype (photographs of Fig. 6D-F, H reproduced from Xie et al. 2023) D female dorsal habitus E female lateral habitus F female ventral habitus G female frontal view H labels I male dorsal habitus, from Phang-nga, Thailand J female dorsal habitus, from Ranong, Thailand K male dorsal habitus, from Thừa Thiên Huế, Vietnam.